<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style type="text/css">
        *{
            color: red;
           margin: 0;
            padding: 0;
        }
        .header{
            width: 1000px;
           height: 64px;
            background: #2A4AA0;
            margin: 0 auto;
        }
        .container{
            height: 400px;
            width: 1000px;
            margin: 0 auto;
        }
        .container.main{
            float: left;
            width: 700px;
            height: 400px;
            background: blueviolet;
        }
        .container.side{
            float: right;
            width: 300px;
            height: 400px;
            background: coral;
        }
        .footer{
            width: 1000px;
            height: 80px;
            background: black;
            margin: 0 auto;
        }
    </style>
</head>
<body>
<div class="header">

    </div>
    <div class="container">
        <div class="subdide">

        </div>
        <div class="main">

    </div>
    <div class="side">

    </div>
</div>
<div class="footer">

</div>
</body>
</html>